An earth working tool (20), in particular a cultivator bar for agriculture, has a mounting segment (21) and a working part (22) directly or indirectly adjoining it. A wear-optimized design for the earth working tool (20) is achieved according to the present invention by the fact the mounting segment (21) comprises two support surfaces (21.6, 21.8), spaced apart from one another, that are part of a hook-in connection.
